What cells smaller than plant/animal cells can we see using it?

Why does the skin of your finger shrink when you wash clothes for a long time?

Prior knowledge can be gained from personal experience and a) forming well-developed hypotheses. b) listening to opinions of other people on a topic. c) researching previous experiments and results on a topic. eliminate d) no other methods. it can only be gained by personal experience.

As the earth formed, the force of gravity increased due to increased mass. what effect did this increased gravity have on the forming planet?